NEAT domains are heme and/or hemoprotein-binding modules highly conserved in secondary structure [1]. They have roles in hemoprotein binding, heme extraction and heme transfer [2]

1: Molecular and evolutionary analysis of NEAr-iron Transporter (NEAT) domains. Honsa ES, Maresso AW, Highlander SK; PLoS One. 2014;9:e104794. PMID:25153520

2: Recent developments in understanding the iron acquisition strategies of gram positive pathogens. Sheldon JR, Heinrichs DE; FEMS Microbiol Rev. 2015;39:592-630. PMID:25862688